/Engine/Source/Runtime/Core/Public/Containers/Array.h
Inserts given elements into the array at given location.
Location at which the item was inserted.
[SizeType](API\Runtime\Core\Containers\TArray\SizeType) Insert ( std::initializer_list< [ElementType](API\Runtime\Core\Containers\TArray\ElementType) > InitList, const [SizeType](API\Runtime\Core\Containers\TArray\SizeType) InIndex )